Logan observes a paramecium under a microscope. The eyepiece of the microscope has a horizontal scale marked in mm. The paramecium starts at the 65 mm mark and ends up at the 42 mm mark. What is the paramecium's displacement?

- 23 mm

Explanation:

Data provided in the question:

Initial position of the paramecium = 65 mm mark

Final position of the paramecium = 42 mm mark

Now,

The Displacement is given as the difference of the Final position and the initial position

Thus,

Paramecium's displacement = Final position - Initial position

= 42 mm - 65 mm

= - 23 mm